Tunnel ram street carbs

That Sounds an awful lot like a hybrid AVS/AFB. Does it have boosters in the secondary?

yep , boosters, I should mention the flapper door is controlled by the amount of air being sucked onto the secondaries.

jpar,
where did you source your progressive linkage kit?

summit sell both kinds , the progressive is a little more complicated to set up , but im sure you could do it easy. I just prefer to run them together, so far so good.